題一. 4/9 = 12/A = B/135 = C/198 = 100/D
題二. 156/240 = E/120 = 52/F = 39/G = H/20
請問各英文的答案是??
thx~~
數學分數題
2007-06-28 4:11 am
回答 (7)
2007-06-28 4:19 am
✔ 最佳答案
a=9X3=27b=4X135/9=60
C=4X198/9=88
D=9X100/4=225
E=156X120/240=78
F=240X52/156=80
G=240X39/156=60
H=156X20/240=13
2007-06-27 20:20:06 補充：
我要最佳!!!
參考: 我自己~我中四la
2007-06-30 2:36 am
1.
A=27,B=60,C=88,D=225
2.
E=78,F=80,G=60,H=13
A=27,B=60,C=88,D=225
2.
E=78,F=80,G=60,H=13
2007-06-29 1:41 am
1(a).4/9=12/A
4/9=4*3/9*3
4/9=12/27
1(b).4/9=B/135
4/9=4*15/9*15
4/9=60/135
1(c).4/9=C/198
4/9=4*22/9*22
4/9=88/198
1(d).4/9=100/D
4/9=4*25/9*25
4/9=100/225
2(a).156/240=E/120
= (156/2)/(240/2)
= 78/120
2(b).156/240=52/F
= (156/3)/(240/3)
= 52/80
2(c).156/240=39/F
= (156/4)/(240/4)
=39/60
2(d).156/240=H/20
= (156/12)/(240/12)
= 13/20
Hope I can hepl you.
4/9=4*3/9*3
4/9=12/27
1(b).4/9=B/135
4/9=4*15/9*15
4/9=60/135
1(c).4/9=C/198
4/9=4*22/9*22
4/9=88/198
1(d).4/9=100/D
4/9=4*25/9*25
4/9=100/225
2(a).156/240=E/120
= (156/2)/(240/2)
= 78/120
2(b).156/240=52/F
= (156/3)/(240/3)
= 52/80
2(c).156/240=39/F
= (156/4)/(240/4)
=39/60
2(d).156/240=H/20
= (156/12)/(240/12)
= 13/20
Hope I can hepl you.
2007-06-28 5:08 am
1.
4/9 = 12/A
A=(12/4)*9=27
4/9 =B/135
B=a*135/9=60
4/9 =C/198
C=4*198/9=88
4/9 =100/D
D=(100/4)*9=225
A=27
B=60
C=88
D=225
2.
156/240 = E/120
E=156*120/240=78
156/240 = 52/F
F=(52/156)*240=80
156/240 = 39/G
G=(39/156)*240=60
156/240 =H/20
H=156*20/240=13
E=78
F=80
G=60
H=13
4/9 = 12/A
A=(12/4)*9=27
4/9 =B/135
B=a*135/9=60
4/9 =C/198
C=4*198/9=88
4/9 =100/D
D=(100/4)*9=225
A=27
B=60
C=88
D=225
2.
156/240 = E/120
E=156*120/240=78
156/240 = 52/F
F=(52/156)*240=80
156/240 = 39/G
G=(39/156)*240=60
156/240 =H/20
H=156*20/240=13
E=78
F=80
G=60
H=13
2007-06-28 5:01 am
A=27
B=60
C=60
D=88
E=135
F=78
G=80
H=13
B=60
C=60
D=88
E=135
F=78
G=80
H=13
2007-06-28 4:35 am
做這題分數，主要是整大佢…
4/9 --> 分子／分母乘３．．．４*3=12 .. 這樣，A=9*3=27
135/9=15..這樣分子乘15..B=4*15=60 100/4=25...D=9*25=225
二，156/240同樣…240-->120 係除２ so 156 都要除２ E=156/2=78
156/52=3 So F=240/3==80 156/39=4 so G=240/4= 60 , 240/20=12 so H=156/12=13...
做分數…如果分子乘大左，分母都同樣要乘相同的數…
分子除，則同樣一樣，分子除，分母都要除…同樣
4/9 --> 分子／分母乘３．．．４*3=12 .. 這樣，A=9*3=27
135/9=15..這樣分子乘15..B=4*15=60 100/4=25...D=9*25=225
二，156/240同樣…240-->120 係除２ so 156 都要除２ E=156/2=78
156/52=3 So F=240/3==80 156/39=4 so G=240/4= 60 , 240/20=12 so H=156/12=13...
做分數…如果分子乘大左，分母都同樣要乘相同的數…
分子除，則同樣一樣，分子除，分母都要除…同樣
收錄日期: 2021-04-12 21:46:54
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070627000051KK04116